Bolt.



G. B. KOHLER.

BOLT.

APPLIGATION FILED MAY 31, 1913.

1,1 1 1,657, Patented Sept. 22, 1914.

3 Hwy na 5; 1 UWW7L UNIT sirA- SYLVANIA.

PATEN GEORGE E. KoHLER, or PHILADELPHIA, I'ENNsYLvANIA, ASSIGNOR TO THEJ. G.-

BRILL COMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION or PENN-Specification of Letters 'li'atent.

Prion.

BOLT.

Patented Sept. 22, 1911.

Application filed May 31, 1913. Serial-No. 770,880.

To all whom it may concern:

Be it known that I, Ghoncn B. KOHLER, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Bolts, of which the following is a specification. p

The object or" his invention is to provide a two-part bolt which can bepassed through an opening of the same size as the bolt and, when theparts are in alinement, the heads thereon will overlap the walls of theopenings so that, when a nut is applied, the bolt can be, drawn tightlyto attach two or more elements firmly together. V

The invention is particularly adapted for use in blind openings, whereit is impossible to] insert solid bolt from one side and to apply thenut from the opposite side,.as, for' and the nut applied; Fig. 2. is asectional" view' showing the method'oi' inserting the two parts of thebolt-in the opening; Fig. 8, is a plan view; Fig. ,1, is a sectionalView on the line a-cz, Fig. 1; and Figs. 5 and 6, are perspective viewsillustrating the two parts of the bolt. Y I

Referring to the drawing, 1 and 2 are the two parts of the bolt; theparting line at, Fig. 1, being parallel with. the sides ofthe bolt for acertain distance and thenis ht an angle, as at a, Fig. 1. In the section2 of the bolt isa V-shziped groove 3, in the-present instance extendingalmost the entire length of the bolt and tapered to nothing at.

the head end.

l-is a- V-shaped rib on the part 1, whlch extends into the groove in thepart 3, keeping the two parts in. alinement when one On the part 1 is aso that "when the bolt is in position, as in Fig. 1, it will overlap oneside of the opening.

The head 6 of the part 2 is shape as shown in Figs. 4: and 6, and is ofa suflicient width to allow it to pass through the openmg when the part1 is in position, as in Fig. '2, and it pro ects sufliciently to allowit to overlap the wall of the .opening when in place, as in Fig. l

The two parts are so designed that, when it is desired to insert thebolt in the openmg, the part 1 is inserted part way into the opening, asin Fig. 2, and is held while the part 2 i's inserted and, after the headpasses the end of the opening, the two parts are moved so that the heads5 and 6 come in contact with the surface of one of the elements to whichthe bolt is to be attached, the heads. overlapping the edges of theopenng. It will be noticed that when the bolt is in position it issubstantially the same size as the opening, When the parts are ina-linement, then the nut? is screwed onto the two parts, locking themtogether and clamping the elements 8 and 9, as indicated in Fig. 1. Thisconstruction makes an exceedingly simple and effective bolt and onewhich can be applied from one side of an opening. 1

In order to prevent the bolt from turning, 1 provide the part 1 with afin 10 in the present instance, which, if the material in which the holeis made is of wood or other comparatively soft substance, will embeditself into the same, preventing the bolt from turning when the nut isapplied. If the material in which the hole is made is of metal thenagroove may be formed in the metal for the reception of the fin on thepart 1, if desired. v

The bolt can be of an length, depending upon the material through whichit is to extend and can be used for any purpose" same time to secure thenut'onthe opposite 1 side, and where the bolt is the same size as theopening. I

I claim:- a

1'. X bolt made in two parts, each part having a head at one end and ascrew threaded body portion, the parting line of the two sections of thebolt being to one sidev of the center line through the bolt and at thehead portion being arranged at an incline to the center line so that onesection can be passed through an'opening having extended parallel wallsin advance of the other section, both sections, when in place,

snugly fitting the said opening; with a nut of each sectionbeing'threaded, the body portion of one section being of a greaterthickness than the other so as to bring the parting line at one side ofthe longitudinal center line of the bolt, the parting line at and nearthe head of the bolt being inclined so that the head of the thin sectionwill be 'of a greater 'width than the head of the thick section, theparts being so proportioned that when one section is inserted in anopening having extended walls of even diameter throughout the body ofthe bolt will fill the opening and the heads will project beyond theopening; with a nut arranged to be applied to the threaded end of thebolt.

In testimony whereof, I have signed my 25 GEORGE B. KQHLER.

Witnesses:

HENRY C. ESLING, H. F. MGKILLIP.

